Abstract
We report measurements of branching fractions for (Formula presented) decays into (Formula presented) (Formula presented) (Formula presented) (Formula presented) (Formula presented) (Formula presented) (Formula presented) (Formula presented) and an upper limit for (Formula presented) final states based on a data sample of (Formula presented) events collected with the BESI detector at the Beijing Electron-Positron Collider. The branching fractions for (Formula presented) and (Formula presented) update previous BES results, while those for other decay modes are first measurements. The ratios of (Formula presented) and (Formula presented) branching fractions are smaller than what is expected from the (Formula presented) rule by a factor of 5 for (Formula presented) and by a factor of 2 for (Formula presented) (Formula presented) and (Formula presented) while for other studied channels the ratios are consistent with expectations within errors.
| Original language | English |
|---|---|
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 67 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2003 |
| Externally published | Yes |